Hardware Engineer &
Full-Stack IoT Developer

Designed and created a complete IoT solution consisting of 4 separate PCB assemblies to control 2 mains voltage high current relays (25A). The system allows users to trigger and schedule relay operations through an Android application.

This project involved full-stack development from hardware design to cloud infrastructure. I handled the complete product lifecycle from conception to production, with the first batch of 1000 units successfully manufactured. The device was designed with CE Certification requirements in mind.

The system uses Firebase as the communication bridge between devices and the mobile application, ensuring real-time synchronization and reliable operation. The firmware was developed using FreeRTOS and ESP-IDF framework, implementing secure MQTTS communication with remote task logging capable of handling approximately 15 messages per second.

The project required innovative design solutions due to volume restrictions, leading to a modular 4-PCB architecture that maximizes functionality while maintaining compact form factor. A complete backend was built using FastAPI, with DevOps & CI/CD for application monitoring and deployment using Docker.

Architected and developed a comprehensive all-in-one hospitality management platform that revolutionizes the guest experience from booking to checkout. The platform serves 100+ properties, reducing check-in processing time by 80% through contactless digital processes while increasing guest satisfaction scores and generating 35% more revenue through integrated local services and experience booking capabilities.

Built as a complete digital ecosystem that eliminates traditional hospitality pain points through contactless check-in, digital key management, integrated concierge services, and automated guest communications. The platform handles everything from ID verification to local experience bookings, with real-time synchronization across multi-property management systems.

Developed a comprehensive IoT platform for managing over 1000 waste collection devices across multiple locations. The system provides real-time monitoring, device configuration, and GPS-based visualization of waste collection operations.

Designed an Ultra-High-Accuracy ADC for dynamic weighting applications. Implemented a robust security architecture using JWT authentication for device authorization and created a complete web dashboard for fleet management. The platform significantly improved operational efficiency by 35% and provided valuable analytics for waste collection optimization.

The platform handles multiple communication protocols including WiFi, LoRaWAN, and NB-IoT, ensuring reliable connectivity across diverse deployment environments. Data optimization was achieved through binary C struct transmission over MQTT using IPv6, reducing bandwidth usage by 40% while maintaining real-time responsiveness for 24/7 operations management.

Designed specialized 6-layer mixed signal PCB solutions for custom industrial 3D printer heads used in advanced material science applications. Implemented precision thermal management enabling consistent material deposition at 0.01mm tolerances for research and development in material engineering.

This cutting-edge project required designing the electrical control panel and detailed manufacturing plan for the industrial 3D printer. Created an adjustable 300W DC/DC Power Stage with H-Bridge PCB featuring voltage & current feedback for accurate load control. Led procurement and validation of over €40,000 worth of components required for the first production run.

The PCB design incorporates advanced thermal management and precision control circuits to ensure consistent material deposition at the cellular level, pushing the boundaries of what's possible in industrial 3D printing technology.

Designed and manufactured specialized sterilization equipment and stability chambers for the medical and pharmaceutical industry. This role combined precision engineering, manufacturing expertise, and quality control to deliver critical equipment for healthcare applications.

Responsible for small-scale production runs, ensuring each unit met stringent medical industry standards. Developed custom solutions including 3D printed and metal jigs for optimal HVAC pipe routing and testing, improving assembly efficiency and product reliability.

This role provided comprehensive experience in manufacturing processes, from initial design through production and quality assurance, working with equipment critical to medical and pharmaceutical operations.